See the Mars One guys: http://mars-one.com/en/
Here's a bit more info on how the funding / science will work: http://www.bbc.co.uk/news/world-europe-18506033
In short, they want to recruit contestants for a reality TV show, which will raise funds over 10 years, then the winners will get to go to Mars by 2023 on a one-way ticket (NASA plans to get there by 2030). Meanwhile, the reality show will continue to raise funding for more trips.
It all seems serious.